wpf Treeview四级绑定
时间: 2024-01-04 13:02:27 浏览: 77
WPF TreeView 四级绑定的实现方法与三级绑定类似,只需要增加一层 HierarchicalDataTemplate 即可。以下是一个简单的示例:
假设我们有一个模型类 Product,其中包含一个名称和子产品列表:
```csharp
public class Product
{
public string Name { get; set; }
public List<Product> Subproducts { get; set; }
}
```
接下来,我们创建一个 ViewModel,其中包含一个 Product 列表:
```csharp
public class MainViewModel
{
public List<Product> Products { get; set; }
public MainViewModel()
{
Products = new List<Product>
{
new Product
{
Name = "Product1",
Subproducts = new List<Product>
{
new Product
{
Name = "Product1.1",
Subproducts = new List<Product>
{
new Product { Name = "Product1.1.1" },
new Product { Name = "Product1.1.2" }
}
},
new Product
{
Name = "Product1.2",
Subproducts = new List<Product>
{
new Product { Name = "Product1.2.1" },
new Product { Name = "Product1.2.2" }
}
}
}
},
new Product
{
Name = "Product2",
Subproducts = new List<Product>
{
new Product
{
Name = "Product2.1",
Subproducts = new List<Product>
{
new Product { Name = "Product2.1.1" },
new Product { Name = "Product2.1.2" }
}
},
new Product
{
Name = "Product2.2",
Subproducts = new List<Product>
{
new Product { Name = "Product2.2.1" },
new Product { Name = "Product2.2.2" }
}
}
}
}
};
}
}
```
然后我们在 XAML 中创建一个 TreeView,并使用 HierarchicalDataTemplate 嵌套来绑定 Product 列表:
```xml
<TreeView ItemsSource="{Binding Products}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Subproducts}">
<TextBlock Text="{Binding Name}"/>
<HierarchicalDataTemplate.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Subproducts}">
<TextBlock Text="{Binding Name}"/>
<HierarchicalDataTemplate.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"/>
</DataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
```
这将创建一个 TreeView,其中每个 Product 显示为一个节点,其子产品显示为该节点的子节点,子子产品显示为子节点的子节点,以此类推。
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